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Open Quantum Systems Decoherence
Systematic large flavor fTWA approach to interaction quenches in the Hubbard model
arXiv
Authors: Alexander Osterkorn, Stefan Kehrein
Year
2020
Paper ID
22337
Status
Preprint
Abstract Read
~2 min
Abstract Words
88
Citations
N/A
Abstract
We study the nonequilibrium dynamics after an interaction quench in the two-dimensional Hubbard model using the recently introduced fermionic truncated Wigner approximation (fTWA). To assess the range of validity of the method in a systematic way, we consider the SU(N) Hubbard model with the fermion degeneracy N as a natural semiclassical expansion parameter. Using both a numerical and a perturbative analytical approach we show that fTWA is exact at least up to and including the prethermalization dynamics. We discuss the limitations of the method beyond this regime.
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- This paper contributes to the Open Quantum Systems & Decoherence research area in the Quantum Articles archive.
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- We study the nonequilibrium dynamics after an interaction quench in the two-dimensional Hubbard model using the recently introduced fermionic truncated Wigner approximation (fTWA).
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